Friday will be key in Favre watch

Brett Favre thinks he should know by Friday whether he will be able to make his NFL-record 298th consecutive regular-season start Sunday when the Vikings play host to the New York Giants. Favre suffered a sprained sternoclavicular joint in his throwing (right) shoulder when he was hit on the third play of the Vikings' victory over Buffalo last weekend.

This is the first time he's suffered this type of injury and Favre admitted that getting his shirt and socks on remains a challenge. Interim coach Leslie Frazier said Favre will not practice Wednesday and the goal is to have him do some work on Thursday. Favre has yet to try to throw a pass and it's unknown what his range of motion will be.

"I would think by Friday I would have a pretty good grasp just based on that being two days from now, how it feels today versus this past Sunday," Favre said when asked when a decision might be made. "I would say we're going every two days. I don't expect to do much in practice this week, unlike the [broken] foot [in late October] where I did come back and practice. I think this is something that really needs time. So I think I'll have a pretty good idea on Friday where it's going."

Asked if he could rule himself out of the game -- interim coach Leslie Frazier has made it clear this decision largely will be up to Favre and the doctors -- Favre said: "Absolutely. That hasn't happened too many times in my career but sitting here right now? Sure. Friday I should know a lot more just based on how it feels compared to today. I'm not saying that based on the idea I'm going to throw 50 passes tomorrow. I just think how it feels when I wake up will tell a lot."

However, Frazier said the decision on Favre likely would come down to game day.

Favre said no decisions have been made on if he would take a shot before Sunday's game in order to numb the pain. "I’m sure in that area you have to be careful," Favre said. "But it’s always an alternative. But I’m hoping to, like with the foot, with each day, see some improvement, which I guess today’s a little bit better. But we really haven’t discussed that."

Both Frazier and Favre said that the quarterback would not start just for the sake of extending his streak and then have him come out.

"I would want to play the whole game," Favre said. "As I said after the game Sunday and I’ve said prior to this past week that I want to see this through and that means game and season. But I also don’t want to jeopardize the team by just doing it for selfish reasons and I wouldn’t do that. Just treat it day to day and if the streak is over this week it’s over. I wouldn’t have to worry about talking about it.”

Harvin still dealing with migraines

Wide receiver Percy Harvin continues to deal with the affects of a migraine headache that caused him to sit out last Sunday's game. Harvin did not practice last Thursday or Friday after the onset of another migraine in the middle of last week.

Harvin was not on the field at the start of Wednesday's practice and was expected to sit out.

Frazier said at this point Harvin "should be fine and should be able to play on Sunday." However, the team will need to see how he improves throughout this week before making a final determination.

“My understanding of the migraines is they can come and go, so we’re just being precautionary with Percy as we’re trying to get him ready and hopefully take care of some things that will help him long term," Frazier said. "It will be day-to-day situation as to whether he’s out here or whether he’s not out here.”

Other injuries

Defensive end Ray Edwards, who missed last Sunday's game because of a sprained right ankle, is improving, according to Frazier. "We think there's a chance that we may have him this weekend," Frazier said. Edwards, however, did not practice on Wednesday.

Running back Toby Gerhart has a hamstring injury and the plan is to cut back on his reps this week in practice. Gerhart was on the field to start Wednesday's practice.

Pro Bowl left guard Steve Hutchinson was wearing a cast on his right hand as he practiced. He did not play last Sunday because of a broken thumb.

Safety Tyrell Johnson has an MCL injury and there is a good chance he will miss this game. He did not practice Wednesday.